Well that does not solves the problem actually. Windows library does not index files stored in the SD card and apps also needs a special permission to access to

Well that does not solves the problem actually. Windows library does not index files stored in the SD card and apps also needs a special permission to access to the SD card. See here http://arstechnica.com/gadgets/2012/11/surface-disk-space-a-bit-better-and-a-bit-worse-than-microsoft-says/ http://arstechnica.com/gadgets/2012/11/surface-disk-space-a-....